Work

Light and color: photonic resources for quantum metrology

Year: 2025

Type: article

Abstract: A finite precision is always associated with the estimation of a parameter, whether it is time, length, or a rotation angle. What does fundamentally limit this precision, given a fixed amount of resources—such as total energy—that are used in parameter estimation? The answer depends on whether classical or quantum strategies are employed. In this paper, we explore the fundamental precision limits of metrological protocols, with a focus on how quantum optics and photonic devices can achieve a quadratic improvement in precision compared to classical setups while using the same amount of resources. We analyze both theoretical aspects and experimental demonstrations, highlighting the respective roles of field statistics and spectral properties in enhancing precision.

Source: Photoniques

DOI: 10.1051/photon/202513148

Authors: Pérola Milman, Eloi Descamps, Othmane Meskine

Institutions: Centre National de la Recherche Scientifique, Université Paris Cité, Laboratoire Matériaux et Phénomènes Quantiques, Institut de Recherche sur la Biologie de l'Insecte UMR 7261, Université Paris Diderot

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: hybrid

OpenAlex ID: W4410449138

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